Steve Markwell, an animal enthusiast, wanted to share a valuable lesson about the harmful effects chaining has on a dog.
Markwell found a German Shepard tied to a fence post. The dog was aggressive and snapped at Markwell whenever he got too close.
After several tries, he freed the dog, called Alex. Less than an hour later, Alex began to warm up to Markwell and wasn't so aggressive anymore.
The following day, Markwell recorded another video clip, and the difference in Alex was remarkable. Gone was the snapping dog from the day before.
In the second video, Alex could be seen sitting on Markwell's lap. He enjoyed all the petting and head rubs and even appeared playful.
Seeing Alex be free for the first time in ages was heartwarming and the clip ends with Alex bouncing around the yard and playing with a ball.
But before we show you Alex's transformation, allow us to introduce AJ – a dog who was abandoned by his owners.
The Pitbull and Labrador mix was left at the Carson Animal Care Center in California back in 2016. At first, the dog just cried when he realized that the humans who once loved him and cared for him were never coming back.
The 7-year-old AJ was a sweet dog and soon won the hearts of all the staff members and volunteers. AJ has since been adopted, thanks to his video going viral.
Not all dogs are as lucky as AJ, and most of them end up at kill-shelters where they are euthanized. Thankfully AJ got the happy ending he deserved. Speaking of dogs who were given a second chance at life, meet the adorable Duffy.
Duffy had to face many obstacles, including being diagnosed with diabetes and losing his sight, which in turn affected his quality of life.
His owners thought there was nothing left to do for the poor pooch but then they met a veterinarian who was willing to help Duffy regain his sight.
Even though the surgery and treatments were expensive, they didn't think twice. The operation was a success and Duffy's family captured the beautiful moment when he was able to see his owners again.
Here are all three videos, which one do you like most?